[FFmpeg-devel] [PATCH v2 3/3] avformat/hashenc: add streamhash muxer

[Peter B.]

Hi :)

On 11/09/2019 17:57, Gyan wrote:
>
> On 11-09-2019 08:19 PM, Moritz Barsnick wrote:
>> The original user suggesting this muxer also requested a stream type
>> indicator. Is that info really useful and not redundant, assuming the
>> user will need to understand the implications of remuxing anyway?
>
> A bit of redundancy is useful for error-checking.

If I understand this correctly, does it mean that the order of streams
output by the streamhash muxer will be "in order of type" (video, audio,
etc), independent of the order in the source?

So 2 files (source/target) will have matching streamhash output order,
independent of their actual stream order inside their containers?


Since this streamhash is intended for content-validation and not
remux-validation, I would say the way it's now is great!



>>
>> If I add this, and don't make it optional, what should the format be?
>> Thus?:
>>
>> 0,v,SHA256=...
>> 1,a,SHA256=...
>> 2,s,SHA256=...
> Looks fine.

+1 from me, too :)

I guess with multiple A/V tracks it will then be like this?

0,v,SHA256=...
1,v,SHA256=...
2,a,SHA256=...
3,a,SHA256=...
4,a,SHA256=...
5,s,SHA256=...


Thank you very much,
Peter B.